The villi are the tiny finger-like projections that cover the folds of the small intestine. The singular of villi is villus.
Villi. Also the Villi are covered in Micro-villi - just the same but smaller. The function of them is to increase surface area for absorption.
rugae It's not rugae - for stomach. Small intestine wall is plicae circulares.
the lining of the small intestine has folds, and are covered with finger-like projections called villi, which are covered with thousands of micro-villi
Folds and projections of alimentery canal increase surface area for digestion and absorption of food.
The minute structures that project from the inner walls of the small intestine are called villi. They help in the digestion process by continuously pushing digested particles in one direction. Their function is to absorb nutrients. These villi effectively increase the surface area of the intestine so more nutrients can be absorbed.
No, the length increases. When you are alive, the muscles are contracted in folds, and when you die, these folds relax, expanding the small intestine.
permanent folds are called plicae circulares temporary folds are called rugae.
Both are found inside the small intestine, are microscopic, and are used to increase the surface area of the small intestine. Villi are tiny microscopic folds in the small intestine lining. Microvilli are little hairlike projections from individual epithelial cells of the small intestine. They have capillaries and a lacteal that lead to the circulatory and lymph systems to transport nutrients that are absorbed.
circular folds
Becaus it does HaHAHAHAHA
The circular folds or plicae circularis are the permanent folds or ridges of the mucosa.
They are called "plicae circulares"